Doll, Dietrich The presence of occipital hair in the pilonidal sinus cavity-a triple approach to proof. [electronic resource] - International journal of colorectal disease May 2018 - 567-576 p. digital Publication Type: Journal Article ISSN: 1432-1262 Standard No.: 10.1007/s00384-018-2988-8 doi Subjects--Topical Terms: Bayes TheoremButtocks--pathologyHair--pathologyHumansModels, BiologicalPilonidal Sinus--pathology